Grok-4.1 Fast Non-Reasoning
by xAI
Grok-4.1 Fast Non-Reasoning is a model from xAI, released on November 17, 2025. It has a 2M-token context window and can generate up to 30K output tokens. API pricing is $0.2 per 1M input tokens and $0.5 per 1M output tokens.
Bringing the next generation of tool-calling agents to the xAI API. Grok-4.1 Fast Non-Reasoning uses no thinking tokens for immediate responses, making it faster while maintaining high quality.
Key specs
| Provider | xAI |
|---|---|
| Release date | 2025-11-17 |
| License | proprietary |
| Context window | 2M tokens |
| Max output | 30K tokens |
| Input price | $0.2 / 1M tokens |
| Output price | $0.5 / 1M tokens |
| Output speed | 36 tokens/s |
| Time to first token | 1.65 s |
Quick answers
What is the context window of Grok-4.1 Fast Non-Reasoning?
Grok-4.1 Fast Non-Reasoning has a context window of 2M tokens, with a maximum output of 30K tokens per response.
How much does Grok-4.1 Fast Non-Reasoning cost?
Grok-4.1 Fast Non-Reasoning costs $0.2 per 1M input tokens and $0.5 per 1M output tokens through the API.
Is Grok-4.1 Fast Non-Reasoning open source?
No. Grok-4.1 Fast Non-Reasoning is a proprietary model from xAI (proprietary license).
When was Grok-4.1 Fast Non-Reasoning released?
xAI released Grok-4.1 Fast Non-Reasoning on November 17, 2025.
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